diff --git a/Sources/viewport_server.cpp b/Sources/viewport_server.cpp
index 6d35ce7..7f67e58 100644
--- a/Sources/viewport_server.cpp
+++ b/Sources/viewport_server.cpp
@@ -12,7 +12,7 @@
 #include <stdlib.h>
 #include <math.h>
 
-#ifdef KORE_WINDOWS
+#ifdef KINC_WINDOWS
 #include <d3d11.h>
 #include <dxgi.h>
 
@@ -49,7 +49,7 @@ struct dx_context {
 extern "C" struct dx_context dx_ctx;
 #endif
 
-#ifdef KORE_WINDOWS
+#ifdef KINC_WINDOWS
 #include <Windows.h>
 #else
 #include <sys/mman.h>
@@ -66,7 +66,7 @@ static ViewportServerState g_viewport_state = {0};
 // Platform-specific Shared Memory Implementation
 // ============================================================================
 
-#ifdef KORE_WINDOWS
+#ifdef KINC_WINDOWS
 
 static bool shmem_create_windows(const char* name, size_t size) {
     // Create file mapping
@@ -197,7 +197,7 @@ static void shmem_destroy_posix(void) {
 #endif
 
 static bool shmem_create(const char* name, size_t size) {
-#ifdef KORE_WINDOWS
+#ifdef KINC_WINDOWS
     return shmem_create_windows(name, size);
 #else
     return shmem_create_posix(name, size);
@@ -205,7 +205,7 @@ static bool shmem_create(const char* name, size_t size) {
 }
 
 static void shmem_destroy(void) {
-#ifdef KORE_WINDOWS
+#ifdef KINC_WINDOWS
     shmem_destroy_windows();
 #else
     shmem_destroy_posix();
@@ -275,7 +275,7 @@ bool viewport_server_init(const char* shmem_name, int width, int height) {
     return true;
 }
 
-#ifdef KORE_WINDOWS
+#ifdef KINC_WINDOWS
 static ID3D11Texture2D* g_stagingTexture = NULL;
 static int g_stagingWidth = 0, g_stagingHeight = 0;
 #endif
@@ -285,7 +285,7 @@ void viewport_server_shutdown(void) {
         return;
     }
     
-#ifdef KORE_WINDOWS
+#ifdef KINC_WINDOWS
     if (g_stagingTexture) {
         g_stagingTexture->Release();
         g_stagingTexture = NULL;
@@ -346,7 +346,7 @@ void viewport_server_end_frame(void) {
     uint8_t* pixels = g_viewport_state.pixel_buffer;
     uint8_t* pixel_dest = (uint8_t*)g_viewport_state.shmem_ptr + VIEWPORT_HEADER_SIZE;
     
-#ifdef KORE_WINDOWS
+#ifdef KINC_WINDOWS
     // Direct3D11 - read from backbuffer BEFORE swap_buffers
     ID3D11DeviceContext* context = dx_ctx.context;
     ID3D11Device* device = dx_ctx.device;
@@ -435,7 +435,7 @@ void viewport_server_end_frame(void) {
     // (Blender sends view_matrix -> we extract camera -> Blender applies it -> repeat)
     
     // Memory barrier to ensure writes complete before setting ready flag
-#ifdef KORE_WINDOWS
+#ifdef KINC_WINDOWS
     MemoryBarrier();
 #else
     __sync_synchronize();